Typographic mold mechanism



v w M., c. INDAHL TYPOGRAPHIC MOLD MECHANISM Filed Jan. 11, 1924 35 FIG].

34 I I as 42 Patented Dec. 23, 1924..

UNITED STATES PATENT OFFICE.

MAURITZ C. INIDAHL, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO LANSTON MONOTYPE MACHINE COMPANY, OF PHILADELFHIA, PENNSYLVANIA, A COR- PORTION OI VIRGINIA.

TYPOGRAPHIC MOLD MECHANISM.

Application filed January 11, 1924. Serial No. 685,635.

To all whom it may concern:

Be it known that I, MAURITZ O. INDAHL, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Typographic Mold Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the characters of reference marked there- This invention relates to mold mechanism for producing elements for a printing form,

such mechanism comprising blocks forming the bottom, side and end walls of a casting cavity, the top wall being formed by a mold member which is generally replaceable and referred to as a matrix. An opening is provided in one of the blocks, for example, the bottom block, for the entrance of molten type metal and one of the end walls is conveniently formed by the end wall of a movable member termed the mold blade. The opposite end wall may be formed by an end block which may be in the form of a previously cast element held between the side blocks, or in the form of a cross block movable in a direction, usually at right angles to the direction of motion of the blade. In such a mold the body portion of the typographic element produced is ordinarily formed by the bottom end and side walls of the mold whereas the printing face and the sloping walls leading from the printing face to the type body, these walls being known as the beard of the type, is formed by a depression or cavity in the matrix. The matrix de pression is generally produced commercially by a punching or stamping operation which produces a depression having converging side walls, this being necessary because the type must be removed or separated from the matrix by a relative motion heightwise of the type, this being usually accomplished by an upward movement of the matrix, and the sloping walls constituting the beard permit of this separation without tearing or other mutilation.

The object of the present invention is primarily to produce a mold structure of such kind that the typographic product formed will have two end, Walls which are unbroken plane surfaces from the foot of the type up to the printing face formed at the bottom of the matrix cavity. In other words,

the two end walls of the product may be termed flush walls in contradistinction to the usual end walls which have a slope from the shoulder of the body portion to the printing face. These flush ended types, according to the present invention are provided with line faces so that they will print a line or a plurality of lines running from one flush end to the other. With such types tabular printed matter may be produced for example. without any break in the lines, such as will result at the points between adjacent types of the usual sloping bearded form, when they are assembled in line. Since the ends of the types are flush, they are capable of being assembled to produce an unbroken line and tabular composition, such as, for example, horizontal lines constituting a stafi of printed music is readily produced. In casting a typographic element having flush ends, a matrix is employed which is provided with one or more grooves in its bottom surface and a mold blade is utilized which is so formed on its upper surface as to fit with a sliding fit into the groove of the matrix. Other objects of the invention will be hereinafter specifically pointed out or will otherwise appear in connection with the following description of an embodiment of the invention as illustrated in the accompanying drawings in which- Fig. 1 is a plan view of a suitable mold mechanism embodying the invention.

Fig. 2 is a vertical section on approximately the'line 2-2 of Fig. 1,

Fig. 3 is a vertical cross section on approximately the line 33 of Fig. 1,

Fig. 4 is a vertical longitudinal section showing the invention as applied in modified form, and

Fig. 5 is a perspective view of a flush end.- ed typographic element.

The embodiment of the invention illus trated in Figs. 1, 2 and 3 comprises in general a well-known mold construction such as that disclosed in United States Letters Patent No. 980,960, dated January 10, 1911, it being understood that a mold of this kind is adapted to be placed upon a suitable typographic machine and operated in conjunction with such leech-ire; machine suitable for this purpose is basically disclosed in United States Letters Patent No. 625,998, dated May 30, 1899. It is not deemed necessary to describe this well-known mold in de- *the jet ejector 19. the ejector cam 20.

The type blocks 4t are supported on the base block 1 and are of type shoulder height asusual but the cross block 30. particularly in proximity to the casting cavity 1S of a height which is greater than the height of the type blocks by an amount at least as great as the depth of drive in the matrix 31 seated upon the type blocks 4. with its forward end resting against theeross block 30. The matrix is conveniently supported on the type blocks by a bar 32 secured to the mold by screws this bar fitting in a groove cut crosswise of the matrix in the top thereof. There issufiicient olav in the screws and bar 32 so that in fastening the matrix down it may be pressed longitudinally to make a metal tight fit against the cross block 30. The matrix 31 is provided in its bottom surface witha' formative groove This groove may be of a suitable cross-sectional shape to mold the printing face desired and may in fact consist of a plurality of grooves instead of a single groove as shown, but the grooves must extend longitudinally of the matrix through the end thereof which contacts with the crossbloch so that the cross block in addition to forming one end wall of the mold cavity also closes up one end of the grooves in the matrix which grooves constitute the matrix cavity. The groove cavity may also run conveniently through the opposite or rear end of the matrix particularly for convenience of manufacture. The mold blade 35 is slidable between the type blocks and on the bottom wall formed by the base block 1 and is operated, guided and stopped in the usual way. but its forward end isof a height correspondingto the sum of the height of the type blocks 4- and the depth of the groove 34- in the matrix 31: in other words the blade is type high. The upper surface of the mold blade is formed to fit the groove or grooves provided inthe lower surface of the matrix so as to be slidable therein. It will. be observed that the end wall of the mo'ldblade forms not only the end wall of the casting cavity of the mold but also forms the end wall of the matrix cavity and both the end of the mold blade and the end or cross block thus cause the product to have ends which are flush from the foot to the printingface, the end of the blade as well as the cavity forming wall of the end block being aplane surface. A. product can be made in accordance with the usual mode of operation of this .mold, which will. have a variety of lengths depending upon how far back the mold blade is drawn in the dimensioning there y of the mold cavity. In this way a product having a printing face 36 (Fig. 5) extending from end to end thereof and having this face of any desired length within the operating limits of the mold may be produced. The end walls of this product are both plane surfaces throughout their height and the product may ie termed flush ended 'sincethe portion 37 of eachend formed in the matrix cavity is in the same plane as the portion38 formed in the mold cavity proper.

In the modification shown "in Fig. 4, the forward end wall of the mold and matrix rarities toru'ied by the typemetal product previously cast, this product being formed. like the mold blade itself, to fit the groove in the matrix. It, of course, fits this groove because it has been previously cast in said groove, the groove fitting portion being extended upwardly from the body portion cast in the mold proper. The mold shown is of the strip material kind well-known in the art, and is basically illustrated in United States Letters Patent No. 1222.415. dated April 10. 1917, which patent discloses its use for continuous strip production 'by the fusion principle, and in United States Letters Patent No. 1,257,006, dated February 19, 1918, dislosing the non-fusion process. The mold does not require detailed descrip tion here. all of its parts being: of the usual construction eri'cept. the matrix 31 which is provided with a groove 34 like that of matrix 31, running from one end of the matrix to the other end thereof and the mold blade 35 which is formed with its upper surface shaped to slidably fit said groove 34. It will be seen that the base block 40 having nozzle opening 41, the side blocks 42, one of which is shown, the matrix, the mold blade and the rear end wall of the previously cast product form the walls of the casting cavity. As shown the last mentioned rearend wall has been pushed by the blade to a point considerably beyond the nozzle opening 41 so that the element to be cast in the cavity will be produced by the non-fusion method and will have its ends flush from the foot to the printing face thereof similarly to the element produced in the mold illustrated in Figs. 1 2 and 3. V

I claim:

1. A typographic mold comprising type I blocks, a matrix provided. with agroove and a mold blade slidable between said type blocks; the upper surface of said mold blade slidably fittingsaid matrix groove.

2. A typographic mold comprising-n base block, type blocks thereon, a matrix supported on said type blocks and being provided with a groove in its lower surface and a mold blade slidable between said type blocks and slidably fitting said matrix groove, the height of the blade being the sum of the height of the type blocks and the depth of the matrix groove.

3. A typographic mold comprising blocks forming the bottom and two sides of the mold cavity, a matrix provided with a groove and forming the top wall of the mold cavity, a mold blade slidably fitting said matrix groove, said blade forming one end wall of the mold cavity and an end block "forming the other end of the mold cavity, said blade and said end block being extended upwardly to form also the ends of the matrix groove.

4. A typographic mold comprising blocks torniing the bottom and two sides of the mold cavity, a matrix provided with a groove and forming the top wall of the mold cavity, a mold blade slid-able between said side blocks and on said bottom block and also slidably fitting said matrix groove, the end of said blade being a plane surface fori'ning one end wall of the mold cavity and one end wall of the matrix groove, and an end block having a plane surface forming the other end wall of the mold cavity and the other end wall of the matrix groove, whereby a flush ended type is produced by the mold.

A typographic mold comprising mold cavity-forming side and bottom walls, a matrix torming the top wall. oi? said mold cavity and being provided with a groove, said grom'c forming the matrix cavity, a

movable cross block forming one end wall of the mold and matrix cavities, and a mold blade slidable between said side walls and on said bottom wall and slidably fitting said matrix groove, the end of said blade forming an end wall of the mold and matrix cavities.

6. A typographic mold comprising a block forming the bottom wall of the mold cavity, type blocks forming side walls thereof, a movable cross block forming one end wall and a mold blade forming the other end wall of the cavity, and in combination there with, a matrix supported on the type blocks and having a groove in the bottom surface thereof, said groove extending from. one end of the matrix to the opposite end thereof, and both the cross block and the mold blade being higher than the type blocks by an amount at least as great as the depth of groove in the matrix, the mold blade slidably fitting said groove whereby the cross block and the mold blade close the ends of said groove and form end walls of that portion of the casting cavity which is formed by said groove.

7. A typographic mold comprising blocks forming the bottom and two sides of the mold cavity, a cross block forming a third side of said cavity, a matrix forming the top wall of said cavity and being provided. with a groove in communication with said cavity, said cross block being extended upwardly to form an end wall of the matrix groove, and a mold blade slidably fitting said matrix groove and its end forming the fourth side of the mold cavity and also forming an end wall of the matrix groove.

MAURITZ C. INDAHL. 

